SAM3N00A Atmel Corporation, SAM3N00A Datasheet - Page 17

• Manufacturer Part Number: SAM3N00A
• Manufacturer: Atmel Corporation

11011A–ATARM–04-Oct-10
Figure 5-1.
Figure 5-2.
Note:
Figure 5-3
Since the PIO state is preserved when in backup mode, any free PIO line can be used to switch
off the external regulator by driving the PIO line at low level (PIO is input, pull-up enabled after
backup reset). External wake-up of the system can be from a push button or any signal. See
Section 5.6 “Wake-up Sources”
Restrictions
With Main Supply < 3V, ADC and DAC are not usable.
With Main Supply >= 3V, all peripherals are usable.
below provides an example of the powering scheme when using a backup battery.
Single Supply
Core Externally Supplied
ADC, DAC Supply
(3V-3.6V)
VDDCORE Supply
(1.62V-1.95V)
Main Supply
(1.8V-3.6V)
Main Supply
(1.62V-3.6V)
Can be the
same supply
for further details.
VDDIO
VDDIN
VDDOUT
VDDCORE
VDDPLL
VDDIO
VDDIN
VDDOUT
VDDCORE
VDDPLL
ADC, DAC
Regulator
Voltage
I/Os.
Regulator
ADC, DAC
Voltage
I/Os.
SAM3N
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